6 way seat questions

so I got a six way base for my barracuda...71 it came with no springs I called the guy I got it from and he sent me 3 springs I figured out where the 2 short ones go that return the seat latches, my question is the heavy spring that returnes the tracks. Does anyone have a pic of the spring and its mounting position? im feeling its the wrong piece as I cant make it fit anywhere or the track is missing the correct mount...
thks in advance

This might help:

http://www.nicksgarage.com/6way/6way70e_05.jpg

thanks that does help, im feeling I have the wrong spring, as the rear of the one he gave me looks morel ike the one off the non 6 way track just a little longer on the rear shoulder.anyone got apic of just the spring?